Boost your sound from all of your portable devices: including all iPod, MP3 players, PSP and Nintendo DS units. Gaming chairs will give a modern look to your room. Sound Rocker Gaming Chairs have an amazing speaker set up that will make you feel part of your favorite video game. The Pyramat has a subwoofer speaker mounted in the head cushion so the sound comes from directly behind the player's head. You will experience sound and motion in a whole new way when you plug in these Game Chairs. You will experience new levels of thrills and excitement with these Gaming Chairs. Gaming chair seating, in particular, can make quite a difference in longer gaming sessions. The comfort level and posture can vary between different types of game chair seating.